I remember when D20 Star Wars was coming out and (after the cries of the D6 fans died down) we were talking about what we wanted to see for the new game, there were numerous responses and then there were flamewars because SW means vastly different things to different people. Just take a look at this thread and you'll see that.
In all honesty though, I think the SW line was doomed to be a short line anyway. There is a rather finite amount of material to stat up before you're down to what WEG had to do, start creating totally new material that hasn't appeared in SW canon before. Either that, or start writing sourcebooks based on obscure references only hinted at in the books and movies; like writing about a planet that was only mentioned once briefly in one of the movies. Then again, WotC is already doing that to an extent. Not that that's bad or anything, but it's not to make many SW fans happy since it's simply not canon.
New material is too slow in coming out for SW in the way of movies and books to really fuel new sourcebooks. Even when a new book comes out for the EU, it's still usually not enough to write a sourcebook on. SW has played out for the time being. Ep 3 could (dare I say should) fuel another book out of WotC, but after that, what? We've got just about all we need out of the Yuuzhan Vong beyond any new bio-items bought out in any new books in the Vong invasion series. I would like to see Tales of the Jedi and KotoR material, even if much of it is already done. There is still enough material there for another sourcebook, even if it is only 64 pages. Give us another era book for the New Republic and I think that's all that we'll need.
One question though: Does WotC have rights to reprint WEG material? If so, there are a couple gems there that coudl be mined and added to any new material to beef up a sourcebook. Sure, it's crappy for those that already own WEG stuff, but not all of us do.
Kane